reupload

src/main/java/com/loohp/limbo/utils/NetworkUtils.java

@@ -0,0 +1,36 @@
+package com.loohp.limbo.utils;
+
+import java.io.IOException;
+import java.net.DatagramSocket;
+import java.net.ServerSocket;
+
+public class NetworkUtils {
+	
+	public static boolean available(int port) {
+	    ServerSocket ss = null;
+	    DatagramSocket ds = null;
+	    try {
+	        ss = new ServerSocket(port);
+	        ss.setReuseAddress(true);
+	        ds = new DatagramSocket(port);
+	        ds.setReuseAddress(true);
+	        return true;
+	    } catch (IOException e) {
+			e.printStackTrace();
+	    } finally {
+	        if (ds != null) {
+	            ds.close();
+	        }
+
+	        if (ss != null) {
+	            try {
+	                ss.close();
+	            } catch (IOException e) {
+	            	e.printStackTrace();
+	            }
+	        }
+	    }
+	    return false;
+	}
+
+}